The Cessna O-1E Bird dog firing smoke rocket over the target area in Vietnam during the Vietnam War.

Activities of United States Air Forces Cessna O-1E Bird dog Forward Air Controller (FAC) aircraft of the 20th Tactical Air Support Squadron at Danang airbase in Vietnam. Aerial view of target area during bomb runs. O-1E diving towards target and firing smoke rocket. Mountains and trees in the area. Smoke rising up from the ground. Airplane in flight.